2 send (B/MB) receive (B/MB) time (s)
3 ------------------------------------------------------------
5 33554432/32 25030616/24 24
6 67108864/64 49692348/48 44
7 134217728/128 89076884/85 89
8 268435456/256 125071216/120 164
11 send (B/MB) receive (B/KB) time (s)
12 ------------------------------------------------------------
13 1048576/1 139332/137 1
14 33554432/32 344232/337 6
15 67108864/64 368820/361 8
16 134217728/128 434388/425 19
17 268435456/256 1901472/1946 53